Far as for combat against other players, mandy is not that as good as it seemed to be at first glance, but it has some nice quirks, unique to it.
Most notable thing about combat mandy it is very powerfull boost, so with stacked enough shielding and hull mass, it does preety good job as rammer ship, and combined with its boost, makes it really hard to avoid when it wants to ram, while at same time, dodging in mandy is easier to pull off, especially against fixed only enemy. Pacifer or PA bulids, gonna have hard time keepin up with hitting it, if mandy manage to stay evasive, wich is probly only selling point to bother with it in PVP.
But lacks of utility, and weak base shield (with really wide and huge hitbox), kinda forces use nothing but shield boosters, wich leaves it quite weak against most of gimballed setups. Also its thrusters are very, very exposed, almost like in cheftain, so even if someone gets high hull on it but forgot to add enough MRP's, it still gonna be wrecked rather easly by explosives. In that regard, mandy worst nightmare is facing missile users, who's knows how to use it, as once its shields are down, regadless of amount of hull points, it is advised to not fool around with no shields in that ship.
Hybrid bi-wave bulids are not really good on it either, since distro will be bottlenecked in SYS drain by shield alone, and neither it can keep pump enough WEP juice for high dmg weapons to be able to dish anywhat decent dps by itself, while maintain enough at ENG and SYS, so it can be quite easly get "stalled", if under constant fire. Size 5 distro is heavly bottlenecked by both SYS and WEP. Other types of shields makes it more durable, but even prismatics are not even half as good like in FDL or P2 have, so its gonna suffer in durability of shield contests.
It cant dish out damage, without leaving itself wide open to counter attack, and once it get boost stalled, then its gonna fall soon.
While it has good amount of internals slots, wich allows to make it either hull tank or shield tank, low mass lock factor of 11, makes it poor ship to use for interdict, due that most ships can easly low wake from it, while stacking too much mass is good for ramming, the top speed drops considerably with added mass, so speed tops out slightly above of krait II, but slower than FDL, P2 or FAS, with bulid that focuses on hull and mass.
In my eyes, and own experiences at PVP against it, this ship is not good combat ship (atleast for PVP), too many downsides and weaknesess, and only good only against specific bulids. (Decently good against fixed only users, but rather weak vs gimalled and missiles)
It can be done with mandy (PVP) but best if used as PVE as it meant to be. While lot of PVP'ers seems to trying it out right now because, well since its a new ship, sooner or later they wont be using it too much.